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Title

Effect of Pb doping on the electrical properties of textured Bi-2212 superconducting ceramics

AuthorsRasekh, Sh.; Constantinescu, G.; Sotelo, A.; Torres, M. A.; Diez, J. C.; Madre, M. A.
Issue Date2012
CitationICMS 2012
AbstractThe Pb addition effect on the E-I curves obtained in superconducting Bi-2212 textured ceramics has been studied on Bi2-xPbxSr2CaCu2Oy, (x = 0, 0.2, 0.4 and 0.6) materials. They were textured using a laser floating zone melting (LFZ) device with a growth rate of 30 mm/h. The resulting textured cylindrical bars were annealed to develop the Bi-2212 superconducting phase. On these samples, Tc has been determined by electrical resistivity measurements between 77 K and room temperature. Transport Jc values have been calculated from the I-V curves measured at 77K. The microstructure has also been determined and correlated with the measured electrical properties. The influence of Pb doping on the sharpness of the superconducting to normal transition on the E-I curves has been determined, obtaining the sharpest transitions for samples doped with 0.4 Pb.
DescriptionResumen del trabajo presentado a la: "3rd International Conference on Superconductivity and Magnetism" celebrada en Estambul (Turquia) del 29 de abril al 4 de mayo de 2012.
URIhttp://hdl.handle.net/10261/121853
Appears in Collections:(ICMA) Comunicaciones congresos
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